<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta http-equiv="X-UA-Compatible" content="ie=edge">
    <title>Document</title>
    <script src="https://cdn.bootcss.com/vue/2.5.18-beta.0/vue.js"></script>

</head>
<body>
    <div id="app">

    
    <p v-if="isShow" :style="color">hello world</p>
    <button @click="handleClick">切换</button>
</div>
    <script>
        new Vue({
            el:"#app",
            data:{
                isShow:true,
                color:{
                    background:"red"
                }
            },
            methods:{
                handleClick(){
                    this.isShow = !this.isShow
                }
            }
        })
    </script>
</body>
</html>